Single and multiphase regenerative voltage doubler rectifiers, sag/swell corrector apparatus, and operating methods are presented in which rectifier switching devices are selectively pulse width modulated for regenerative load conditions and for regenerati...

An AC-AC converter configured of a forward converter that converts alternating current to direct current and a reverse converter that converts direct current to alternating current, wherein a first semiconductor switch series circuit, a second semiconducto...

A method in connection with a network converter, and a network converter, the network converter comprising two or more network converter modules coupled in parallel, and first control means for controlling the network converter modules. The method comprise...